The Bourne Ultimatum DVD did 5.4 million units in the first 6 days, pretty much the combined total of all HD DVDs & Blu-ray movies sold so far.

A move like this would end Blu-ray within 6 months in my opinion. They could never compete with the millions of HD DVD discs being sold each week. And for people that have purchased 4 or 5 DVDs that are HD DVD capable, a $150 HD DVD player is an easy purchase.

Toshiba's next step is making all future releases by those studios.... combo discs.

It's an interesting move. It would make all purchases from those Studios usable in HD-DVD players. Giving buyers of DVD a clear path towards which HDM to choose.

It's also a path BD can't follow.

That would mean that Toshiba would have to subsidize hd dvd production costs to all their studios. (you would have to believe uni, para wouldn't want to subtract more production costs off their dvd profits) It would be a great move but how willing are the studios to actually do this?? Thats a lot of combo discs pressed. And we would have to keep the msrp the same price as other studios dvd's right?

It appears the first real attempt at combo only was pretty successful:

“HD DVD [combo] release of Star Trek: Season One, will reach 100,000 units sold. That momentum has led the company to commit to releasing all subsequent Star Trek seasons on high-def, amounting to two more HD DVD titles.”